US20130162550A1 - Touch Panel Device and Scanning Method Therein - Google Patents

Touch Panel Device and Scanning Method Therein Download PDF

Info

Publication number
US20130162550A1
US20130162550A1 US13/470,839 US201213470839A US2013162550A1 US 20130162550 A1 US20130162550 A1 US 20130162550A1 US 201213470839 A US201213470839 A US 201213470839A US 2013162550 A1 US2013162550 A1 US 2013162550A1
Authority
US
United States
Prior art keywords
sensing lines
group
sensing
data values
touch panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/470,839
Inventor
Chun-Hsi Chen
Jun-Shih Chung
Chien-Hsiang Huang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hannstar Display Corp
Original Assignee
Hannstar Display Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hannstar Display Corp filed Critical Hannstar Display Corp
Assigned to HANNSTAR DISPLAY CORPORATION reassignment HANNSTAR DISPLAY CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHUNG, JUN-SHIH, CHEN, CHUN-HSI, HUANG, CHIEN-HSIANG
Publication of US20130162550A1 publication Critical patent/US20130162550A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26Power supply means, e.g. regulation thereof
    • G06F1/32Means for saving power
    • G06F1/3203Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234Power saving characterised by the action undertaken
    • G06F1/325Power saving in peripheral device
    • G06F1/3262Power saving in digitizer or tablet
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416Control or interface arrangements specially adapted for digitisers
    • G06F3/04166Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/047Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using sets of wires, e.g. crossed wires
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/50Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate

Definitions

  • the present disclosure relates to a touch panel mechanism, and more particularly, to a touch panel device and a scanning method therein.
  • a touch panel is equipped with an input function without a mouse or a keyboard.
  • commands may be directly inputted on a display screen of the touch panel, usually by a finger or a stylus pen, such that the touch panel can be operated simply.
  • Such an operating manner is intuitive without complicated considerations, and is very convenient to be applied in a graphical user interface (GUI). So far, the touch panel has been widely applied in various fields such as a smart phone, a personal digital assistant, a tablet personal computer, a terminal device of a bank or a government institution, a medical instrument and a navigation display device.
  • GUI graphical user interface
  • the touch panel with a power saving function may be operated in two modes, i.e., an idle mode and an operating mode.
  • the idle mode is selected for saving power consumption.
  • the touch panel is operated in the idle mode.
  • a scanning of the touch panel is operated at a lower frequency.
  • the times of charging and discharging sensing electrodes are decreased to reduce the power consumption.
  • the touch panel is switched from the idle mode to the operating mode.
  • the scanning of the touch panel is operated at a higher frequency in order to detect precisely the finger's touch position.
  • the touch panel returns from the operating mode to the idle mode.
  • a predetermined frame rate in the idle mode is decreased in order to achieve the object of saving power.
  • this method results in a longer reaction time period as the finger touches the display screen, causing operation inconvenience.
  • An object of the present disclosure is related to a scanning mechanism of a touch panel to solve a problem of an inconvenient operation caused by decreasing a predetermined frame rate.
  • An aspect of the present invention is to provide a touch panel device.
  • the touch panel device includes first sensing lines, second sensing lines and a controlling module.
  • the first sensing lines and the second sensing lines are alternately arranged and are in parallel with each other along a first direction.
  • the controlling module is configured to scan the first sensing lines and the second sensing lines during first frame periods and second frame periods, respectively, which are alternately generated according to the predetermined frame rate, wherein the controlling module is equipped with an idle mode and an operating mode, and when the controlling module is in the idle mode, the controlling module only scans the first sensing lines during each of the first frame periods to acquire a first group of sensing data values, and the controlling module only scans the second sensing lines during each of the second frame periods to acquire a second group of sensing data values, and the controlling module determines whether a touch event occurs according to the first group of sensing data values and the second group of sensing data values.
  • the controlling module when the controlling module is in the operating mode, the controlling module scans the first sensing lines and the second sensing lines during each of the first frame periods and each of the second frame periods.
  • the touch panel device further includes third sensing lines and fourth sensing lines, wherein the third sensing lines and the fourth sensing lines are alternately arranged and are in parallel with each other along a second direction which is perpendicular to the first direction.
  • the controlling module When the controlling module is in the idle mode, the controlling module only scans the third sensing lines during each of the first frame periods to acquire a third group of sensing data values, and the controlling module only scans the fourth sensing lines during each of the second frame periods to acquire a fourth group of sensing data values, and the controlling module determines whether the touch event occurs according to the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values.
  • the controlling module when the touch event occurs, is switched to be in the operating mode and combines the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values, which are acquired last in the idle mode, into a group of initial data values in the operating mode.
  • the controlling module when the controlling module is in the operating mode, the controlling module scans the first sensing lines, the second sensing lines, the third sensing lines and the fourth sensing lines during each of the first frame periods and each of the second frame periods.
  • a touch panel device is provided, in which the touch panel device is equipped with an idle mode and an operating mode, and has first sensing lines and second sensing lines which are alternately arranged and are in parallel with each other along a first direction. First frame periods and second frame periods are generated alternately according to a predetermined frame rate.
  • the touch panel device When the touch panel device is in the idle mode, the touch panel device only scans the first sensing lines during each of the first frame periods to acquire a first group of sensing data values, and only scans the second sensing lines during each of the second frame periods to acquire a second group of sensing data values, and determines whether a touch event occurs according to the first group of sensing data values and the second group of sensing data values.
  • the scanning method further includes the steps described below.
  • the touch panel device When the touch panel device is in the operating mode, the touch panel device scans the first sensing lines and the second sensing lines during each of the first frame periods and each of the second frame periods.
  • the touch panel device has third sensing lines and fourth sensing lines which are alternately arranged and are in parallel with each other along a second direction which is perpendicular to the first direction.
  • the scanning method of the touch panel device further includes the steps described below.
  • the touch panel device When the touch panel device is in the idle mode, the touch panel device only scans the third sensing lines during each of the first frame periods to acquire a third group of sensing data values, and only scans the fourth sensing lines during each of the second frame periods to acquire a fourth group of sensing data values, and determines whether the touch event occurs according to the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values.
  • the touch panel device when the touch event occurs, the touch panel device is switched to be in the operating mode and combines the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values, which are acquired last in the idle mode, into a group of initial data values in the operating mode.
  • the touch panel device when the touch panel device is in the operating mode, the touch panel device scans the first sensing lines, the second sensing lines, the third sensing lines and the fourth sensing lines during each of the first frame periods and each of the second frame periods.
  • the present invention achieves the object of reducing power consumption without decreasing the predetermined frame rate by respectively scanning the odd number of sensing lines and the even number of sensing lines which are alternately arranged.
  • the first combined image after the touch event occurs may be generated by the previously detected sensing data values.
  • the present invention may utilize the original resource without additional computations, and thus the reduction of power consumption may be achieved.
  • FIG. 1 is a diagram of a touch panel device according to an embodiment of the present invention.
  • FIG. 2A is a diagram showing a scanning process of the touch panel device in an idle mode during first frame periods according to an embodiment of the present invention
  • FIG. 2B is a diagram showing a scanning process of the touch panel device in the idle mode during second frame periods according to an embodiment of the present invention.
  • FIG. 3 is a flow chart showing a scanning method of the touch panel device shown in FIG. 1 according to an embodiment of the present invention.
  • FIG. 1 is a diagram of a touch panel device 100 according to an embodiment of the present invention.
  • the touch panel device 100 includes first sensing lines 110 , second sensing lines 120 and a controlling module 150 .
  • the first sensing lines 110 and the second sensing lines 120 are alternately arranged and are in parallel with each other along a first direction. For example, for a plurality of sensing lines which are in parallel with each other, the first one of the sensing lines is a first sensing line 110 ; the next one of the sensing lines is the second sensing line 120 ; the further next one of the sensing lines is the first sensing line 110 again, and the rest of the sensing lines are repeated in a similar manner.
  • the first sensing lines 110 are the odd number of sensing lines and the second sensing lines 120 are the even number of sensing lines.
  • the first sensing lines 110 also can be referred to as the even number of sensing lines and the second sensing lines 120 also can be referred to as the odd number of sensing lines, as known to those skilled in the art, and the embodiments of the present invention are affected thereby.
  • FIG. 2A is a diagram showing a scanning process of the touch panel device 100 in an idle mode during first frame periods t 1 according to an embodiment of the present invention.
  • FIG. 2B is a diagram of a scanning process of the touch panel device 100 in the idle mode during second frame periods t 2 according to an embodiment of the present invention.
  • the controlling module 150 is configured to scan the first sensing lines 110 and the second sensing lines 120 during the first frame periods t 1 and the second frame periods t 2 , respectively, which are alternately generated according to a predetermined frame rate.
  • the first sensing lines 110 are scanned during the first frame periods t 1
  • the second sensing lines 120 are scanned during the second frame periods t 2
  • the controlling module 150 may be an integrated circuit module.
  • one first frame period t 1 occurs before one second frame period t 2
  • another first frame period t 1 occurs, and thereafter another second frame period t 2 occurs; that is, the first frame periods t 1 and the second frame periods t 2 are alternately and sequentially generated.
  • the controlling module 150 is equipped with the idle mode and an operating mode. For saving power consumption, when the controlling module 150 is in the idle mode, the controlling module 150 only scans the first sensing lines 110 during each of the first frame periods t 1 to acquire a first group of sensing data values, and only scans the second sensing lines 120 during each of the second frame periods t 2 to acquire a second group of sensing data values. The controlling module 150 determines whether a touch event occurs according to the first group of sensing data values and the second group of sensing data values. The touch event may occur, for example, when a user desires to use the touch panel device 100 and the user touches a touch panel.
  • the sensing lines are divided into two groups (an odd-numbered group and an even-numbered group) and only one group is scanned during specific frame periods, and thus the object of saving power can be achieved by reducing the number of the scanned sensing lines in one frame period.
  • the controlling module 150 when the controlling module 150 is in the operating mode, the reaction requirement for touching and sensing in the operating mode is different from that in the idle mode, and thus the controlling module 150 scans the first sensing lines 110 and the second sensing lines 120 during each of the first frame periods t 1 and each of the second frame periods t 2 , i.e., the controlling module 150 scans both the first sensing lines 110 and the second sensing lines 120 during any one of the frame periods, which is different from an interlaced scanning manner in the idle mode, and therefore the required sensitivity of the touch panel can be obtained in the operating mode.
  • the touch panel device 100 includes the first sensing lines 110 , the second sensing lines 120 , third sensing lines 130 , fourth sensing lines 140 and the controlling module 150 .
  • the first sensing lines 110 and the second sensing lines 120 are alternately arranged and are in parallel with each other along the first direction
  • the third sensing lines 130 and the fourth sensing lines 140 are alternately arranged and are in parallel with each other along a second direction which is perpendicular to the first direction.
  • the arrangement of the third sensing lines 130 and the fourth sensing lines 140 is similar to that of the first sensing lines 110 and the second sensing lines 120 , e.g., for a plurality of sensing lines which are in parallel with each other, the first one of the sensing lines is the third sensing line 130 , the second one of the sensing lines is the fourth sensing line 140 , the third one of the sensing lines is the third sensing line 130 , and the fourth one of the sensing lines is the fourth sensing line 140 , and the rest of the sensing lines are repeated in a similar manner.
  • the second direction is perpendicular to the first direction, e.g., the first direction is a X-axial direction and the second direction is a Y-axial direction, or the first direction is an east-west direction and the second direction is a south-north direction.
  • the first sensing lines 110 , the second sensing lines 120 , the third sensing lines 130 and the fourth sensing lines 140 is shown in FIG. 1 , yet the present invention is not limited thereto, and the arrangement may be adjusted by those skilled in the art according to practical situations.
  • the controlling module 150 When the controlling module 150 is in the idle mode, the controlling module 150 only scans the third sensing lines 130 during each of the first frame periods t 1 to acquire a third group of sensing data values, and only scans the fourth sensing lines 120 during each of the second frame periods t 2 to acquire a fourth group of sensing data values.
  • the controlling module 150 determines whether the touch event occurs according to the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values.
  • the power saving result can be achieved by dividing the sensing lines into groups and controlling the number of the scanned sensing lines in the idle mode. It is noted that the order of scanning the first sensing lines 110 , the second sensing lines 120 , the third sensing lines 130 and the fourth sensing lines 140 is not limited thereto, and may be modified adaptively by those skilled in the art according to practical situations.
  • the controlling module 150 when the touch event occurs, the controlling module 150 is switched to be in the operating mode and combines the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values, which are acquired last in the idle mode, into a group of initial data values in the operating mode.
  • the controlling module 150 has recorded several groups of sensing data values, and the group of initial data values is generated according to the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values, which are acquired immediately prior to the touch event occurs.
  • an algorithm of the touch panel device 100 in the operating mode needs the information of all the sensing lines for calculation.
  • the predetermined frame rate is not set to be a low value in the idle mode, such that the information of the sensing lines stored originally in the idle mode can be adopted in the operating mode, thereby simplifying the complicated process of the algorithm.
  • the reaction sensitivity of the touch panel should be detected in the operating mode. Different from the interlaced scanning manner in the idle mode, the controlling module 150 scans the first sensing lines 110 , the second sensing lines 120 , the third sensing lines 130 and the fourth sensing lines 140 during each of the first frame periods t 1 and each of the second frame periods t 2 .
  • the controlling module 150 alternately scans the first sensing lines 110 and the second sensing lines 120 during the first frame periods t 1 , i.e., the controlling module 150 performs the scanning process along the +X-axial direction, in which one of the first sensing lines 110 is first scanned and then one of the second sensing lines 120 is scanned, and then the next one of the first sensing lines 110 is scanned, and the rest of the sensing lines are repeated in a similar manner.
  • the controlling module 150 alternately scans the third sensing lines 130 and the fourth sensing lines 140 during the second frame periods t 2 .
  • the scanning process for the third sensing lines 130 and the fourth sensing lines 140 is similar to that for the first sensing lines 110 and the second sensing lines 120 .
  • the controlling module 150 performs the scanning process along the ⁇ Y-axial direction, in which one of the third sensing lines 130 is first scanned and then one of the fourth sensing lines 140 is scanned, and then the next one of the third sensing lines 130 is scanned, and the rest of the sensing lines are repeated in a similar manner.
  • the order of scanning is not limited by the foregoing descriptions, and may be adaptively modified by those skilled in the art according to practical situations.
  • FIG. 3 is a flow chart showing a scanning method 200 in the touch panel device 100 according to an embodiment of the present invention.
  • the hardware for performing the scanning method 200 has been disclosed in the foregoing embodiment and thus is not further described in detail. Except for steps described as being in a specific order, the order of the steps of the scanning method 200 in the present embodiment is not limited.
  • the scanning method 200 in the touch panel device 100 includes steps 210 - 220 .
  • the touch panel device 100 is provided, in which the touch panel device 100 is equipped with the idle mode and the operating mode, and has the first sensing lines 110 and the second sensing lines 120 which are alternately arranged and are in parallel with each other along the first direction.
  • the first one of the sensing lines is the first sensing line 110
  • the next one of the sensing lines is the second sensing line 120
  • the further next one of the sensing lines is the first sensing line 110
  • the rest of the sensing lines are repeated in a similar manner.
  • the first frame periods t 1 and the second frame periods t 2 are generated alternately according to the predetermined frame rate.
  • step 230 when the touch panel device 100 is in the idle mode, the touch panel device 100 only scans the first sensing lines 110 during each of the first frame periods t 1 to acquire the first group of sensing data values, and only scans the second sensing lines 120 during each of the second frame periods t 2 to acquire the second group of sensing data values, and determines whether the touch event occurs according to the first group of sensing data values and the second group of sensing data values.
  • the scanning process can be performed without changing the predetermined frame rate and the determination of whether the touch event occurs is not affected.
  • the object of saving power and the reaction requirement for touching operation can be achieved.
  • the scanning method 200 further includes the steps described below.
  • the touch panel device 100 When the touch panel device 100 is in the operating mode, the touch panel device 100 scans the first sensing lines 110 and the second sensing lines 120 during each of the first frame periods t 1 and each of the second frame periods t 2 .
  • the scanning manners in the idle mode and the operating mode are different from each other.
  • the power saving result may be achieved by performing the interlaced scanning manner in the idle mode, and the operation requirement may be achieved by scanning every one of the sensing lines in the operating mode.
  • the touch panel device 100 has the third sensing lines 130 and the fourth sensing lines 140 which are alternately arranged and are in parallel with each other along the second direction which is perpendicular to the first direction.
  • the scanning method 200 in the touch panel device 100 may further include the steps described below.
  • the touch panel device 100 When the touch panel device 100 is in the idle mode, the touch panel device 100 only scans the third sensing lines 130 during each of the first frame periods t 1 to acquire the third group of sensing data values, and only scans the fourth sensing lines 140 during each of the second frame periods t 2 to acquire the fourth group of sensing data values, and determines whether the touch event occurs according to the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values. Similar to step 220 , reduction in power consumption can be achieved by the interlaced scanning manner performed for the sensing lines in the idle mode.
  • the touch panel device 100 when the touch event occurs, the touch panel device 100 is switched to be in the operating mode and combines the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values, which are acquired last in the idle mode, into the group of initial data values in the operating mode.
  • the efficiency of switching the mode of operation from the idle mode to the operating mode can be increased.
  • the scanning method 200 further includes the steps described below.
  • the touch panel device 100 scans the first sensing lines 110 , the second sensing lines 120 , the third sensing lines 130 and the fourth sensing lines 140 during each of the first frame periods t 1 and each of the second frame periods t 2 .
  • the scanning manners in the operating mode and the idle mode in which the interlaced scanning manner is performed are different. By scanning each of the sensing lines, the detection of reaction for touching operation in the operating mode can be more efficient.
  • the scanning manner is changed to the interlaced scanning manner in the idle mode.
  • the predetermined frame rate may not be decreased too much, and the object of saving power still can be achieved. Additionally, if it is required that the predetermined frame rate cannot be too low, this scanning manner may save more power without decreasing the predetermined frame rate.
  • this method has another advantage.
  • the algorithm in operating mode needs the information of all sensing lines for calculation. Since the predetermined frame rate is not decreased to a low value, when the operation mode is switched from the idle mode to the operating mode, the first group of sensing data value, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values, which are acquired at the last in the idle mode, may be combined into a first group of data values in the operating mode.
  • This method uses of previous data values without acquiring additional data values of the sensing lines. Thus, the efficiency of switching form the idle mode to the operating mode can be increased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Position Input By Displaying (AREA)

Abstract

A touch panel device and a scanning method in the touch panel device are provided. The touch panel device includes first sensing lines, second sensing lines and a controlling module. The first sensing lines and the second sensing lines are alternately arranged and are in parallel with each other along a first direction. The controlling module is configured to scan the first sensing lines and the second sensing lines during a plurality of first frame periods and a plurality of second frame periods, respectively, which are alternately arranged according to a predetermined frame rate.

Description

    RELATED APPLICATIONS
  • This application claims priority to Chinese Application Serial Number 201110446854.9, filed Dec. 23, 2011, which is herein incorporated by reference.
  • BACKGROUND
  • 1. Technical Field
  • The present disclosure relates to a touch panel mechanism, and more particularly, to a touch panel device and a scanning method therein.
  • 2. Description of Related Art
  • A touch panel is equipped with an input function without a mouse or a keyboard. In various types of touch sensing devices, commands may be directly inputted on a display screen of the touch panel, usually by a finger or a stylus pen, such that the touch panel can be operated simply. Such an operating manner is intuitive without complicated considerations, and is very convenient to be applied in a graphical user interface (GUI). So far, the touch panel has been widely applied in various fields such as a smart phone, a personal digital assistant, a tablet personal computer, a terminal device of a bank or a government institution, a medical instrument and a navigation display device.
  • In general, the touch panel with a power saving function may be operated in two modes, i.e., an idle mode and an operating mode. The idle mode is selected for saving power consumption. When a finger or an object does not touch the display screen, the touch panel is operated in the idle mode. At that moment, a scanning of the touch panel is operated at a lower frequency. The times of charging and discharging sensing electrodes are decreased to reduce the power consumption. When the finger touches the display screen, the touch panel is switched from the idle mode to the operating mode. At that moment, the scanning of the touch panel is operated at a higher frequency in order to detect precisely the finger's touch position. When the finger leaves the display panel, the touch panel returns from the operating mode to the idle mode.
  • As known in the prior art, a predetermined frame rate in the idle mode is decreased in order to achieve the object of saving power. However, since the predetermined frame rate is decreased, this method results in a longer reaction time period as the finger touches the display screen, causing operation inconvenience.
  • SUMMARY
  • The following presents a simplified summary of the disclosure in order to provide a basic understanding to the reader. This summary is not an extensive overview of the disclosure and it does not identify key/critical elements of the present invention or delineate the scope of the present invention. Its sole purpose is to present some concepts disclosed herein in a simplified form as a prelude to the more detailed description that is presented later.
  • An object of the present disclosure is related to a scanning mechanism of a touch panel to solve a problem of an inconvenient operation caused by decreasing a predetermined frame rate.
  • An aspect of the present invention is to provide a touch panel device. The touch panel device includes first sensing lines, second sensing lines and a controlling module. The first sensing lines and the second sensing lines are alternately arranged and are in parallel with each other along a first direction. The controlling module is configured to scan the first sensing lines and the second sensing lines during first frame periods and second frame periods, respectively, which are alternately generated according to the predetermined frame rate, wherein the controlling module is equipped with an idle mode and an operating mode, and when the controlling module is in the idle mode, the controlling module only scans the first sensing lines during each of the first frame periods to acquire a first group of sensing data values, and the controlling module only scans the second sensing lines during each of the second frame periods to acquire a second group of sensing data values, and the controlling module determines whether a touch event occurs according to the first group of sensing data values and the second group of sensing data values.
  • In one embodiment of the present invention, when the controlling module is in the operating mode, the controlling module scans the first sensing lines and the second sensing lines during each of the first frame periods and each of the second frame periods.
  • In another embodiment of the present invention, the touch panel device further includes third sensing lines and fourth sensing lines, wherein the third sensing lines and the fourth sensing lines are alternately arranged and are in parallel with each other along a second direction which is perpendicular to the first direction. When the controlling module is in the idle mode, the controlling module only scans the third sensing lines during each of the first frame periods to acquire a third group of sensing data values, and the controlling module only scans the fourth sensing lines during each of the second frame periods to acquire a fourth group of sensing data values, and the controlling module determines whether the touch event occurs according to the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values.
  • In yet another embodiment of the present invention, when the touch event occurs, the controlling module is switched to be in the operating mode and combines the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values, which are acquired last in the idle mode, into a group of initial data values in the operating mode.
  • In one embodiment of the present invention, when the controlling module is in the operating mode, the controlling module scans the first sensing lines, the second sensing lines, the third sensing lines and the fourth sensing lines during each of the first frame periods and each of the second frame periods.
  • Another aspect of the present invention is to provide a scanning method of the touch panel device. The scanning method includes the steps described below. A touch panel device is provided, in which the touch panel device is equipped with an idle mode and an operating mode, and has first sensing lines and second sensing lines which are alternately arranged and are in parallel with each other along a first direction. First frame periods and second frame periods are generated alternately according to a predetermined frame rate. When the touch panel device is in the idle mode, the touch panel device only scans the first sensing lines during each of the first frame periods to acquire a first group of sensing data values, and only scans the second sensing lines during each of the second frame periods to acquire a second group of sensing data values, and determines whether a touch event occurs according to the first group of sensing data values and the second group of sensing data values.
  • In one embodiment of the present invention, the scanning method further includes the steps described below. When the touch panel device is in the operating mode, the touch panel device scans the first sensing lines and the second sensing lines during each of the first frame periods and each of the second frame periods.
  • In another embodiment of the present invention, the touch panel device has third sensing lines and fourth sensing lines which are alternately arranged and are in parallel with each other along a second direction which is perpendicular to the first direction. The scanning method of the touch panel device further includes the steps described below. When the touch panel device is in the idle mode, the touch panel device only scans the third sensing lines during each of the first frame periods to acquire a third group of sensing data values, and only scans the fourth sensing lines during each of the second frame periods to acquire a fourth group of sensing data values, and determines whether the touch event occurs according to the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values.
  • In yet another embodiment of the present invention, when the touch event occurs, the touch panel device is switched to be in the operating mode and combines the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values, which are acquired last in the idle mode, into a group of initial data values in the operating mode.
  • In one embodiment of the present invention, when the touch panel device is in the operating mode, the touch panel device scans the first sensing lines, the second sensing lines, the third sensing lines and the fourth sensing lines during each of the first frame periods and each of the second frame periods.
  • In conclusion, the present invention achieves the object of reducing power consumption without decreasing the predetermined frame rate by respectively scanning the odd number of sensing lines and the even number of sensing lines which are alternately arranged. The first combined image after the touch event occurs may be generated by the previously detected sensing data values. The present invention may utilize the original resource without additional computations, and thus the reduction of power consumption may be achieved.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • The present invention can be more fully understood by reading the following detailed description of the embodiments, with reference made to the accompanying drawings as follows:
  • FIG. 1 is a diagram of a touch panel device according to an embodiment of the present invention;
  • FIG. 2A is a diagram showing a scanning process of the touch panel device in an idle mode during first frame periods according to an embodiment of the present invention;
  • FIG. 2B is a diagram showing a scanning process of the touch panel device in the idle mode during second frame periods according to an embodiment of the present invention; and
  • FIG. 3 is a flow chart showing a scanning method of the touch panel device shown in FIG. 1 according to an embodiment of the present invention.
  • DETAILED DESCRIPTION
  • In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to attain a thorough understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are schematically shown in order to simplify the drawing.
  • As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes reference to the plural unless the context clearly dictates otherwise. Also, as used in the description herein and throughout the claims that follow, the terms “comprise or comprising,” “include or including,” “have or having,” “contain or containing” and the like are to be understood to be open-ended, i.e., to mean including but not limited to. As used in the description herein and throughout the claims that follow, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
  • It will be understood that, although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the embodiments. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.
  • It will be understood that when an element is referred to as being “connected” or “coupled” to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being “directly connected” or “directly coupled” to another element, there are no intervening elements present.
  • FIG. 1 is a diagram of a touch panel device 100 according to an embodiment of the present invention. The touch panel device 100 includes first sensing lines 110, second sensing lines 120 and a controlling module 150. The first sensing lines 110 and the second sensing lines 120 are alternately arranged and are in parallel with each other along a first direction. For example, for a plurality of sensing lines which are in parallel with each other, the first one of the sensing lines is a first sensing line 110; the next one of the sensing lines is the second sensing line 120; the further next one of the sensing lines is the first sensing line 110 again, and the rest of the sensing lines are repeated in a similar manner. That is, the first sensing lines 110 are the odd number of sensing lines and the second sensing lines 120 are the even number of sensing lines. Surely, the first sensing lines 110 also can be referred to as the even number of sensing lines and the second sensing lines 120 also can be referred to as the odd number of sensing lines, as known to those skilled in the art, and the embodiments of the present invention are affected thereby.
  • FIG. 2A is a diagram showing a scanning process of the touch panel device 100 in an idle mode during first frame periods t1 according to an embodiment of the present invention. FIG. 2B is a diagram of a scanning process of the touch panel device 100 in the idle mode during second frame periods t2 according to an embodiment of the present invention. Referring to FIG. 1, FIG. 2A and FIG. 2B, the controlling module 150 is configured to scan the first sensing lines 110 and the second sensing lines 120 during the first frame periods t1 and the second frame periods t2, respectively, which are alternately generated according to a predetermined frame rate. For example, the first sensing lines 110 are scanned during the first frame periods t1, and the second sensing lines 120 are scanned during the second frame periods t2. In practice, the controlling module 150 may be an integrated circuit module. Furthermore, one first frame period t1 occurs before one second frame period t2, and then another first frame period t1 occurs, and thereafter another second frame period t2 occurs; that is, the first frame periods t1 and the second frame periods t2 are alternately and sequentially generated.
  • The controlling module 150 is equipped with the idle mode and an operating mode. For saving power consumption, when the controlling module 150 is in the idle mode, the controlling module 150 only scans the first sensing lines 110 during each of the first frame periods t1 to acquire a first group of sensing data values, and only scans the second sensing lines 120 during each of the second frame periods t2 to acquire a second group of sensing data values. The controlling module 150 determines whether a touch event occurs according to the first group of sensing data values and the second group of sensing data values. The touch event may occur, for example, when a user desires to use the touch panel device 100 and the user touches a touch panel. By changing the manner of scanning the sensing lines in the idle mode, in which the sensing lines are divided into two groups (an odd-numbered group and an even-numbered group) and only one group is scanned during specific frame periods, and thus the object of saving power can be achieved by reducing the number of the scanned sensing lines in one frame period.
  • In one embodiment, when the controlling module 150 is in the operating mode, the reaction requirement for touching and sensing in the operating mode is different from that in the idle mode, and thus the controlling module 150 scans the first sensing lines 110 and the second sensing lines 120 during each of the first frame periods t1 and each of the second frame periods t2, i.e., the controlling module 150 scans both the first sensing lines 110 and the second sensing lines 120 during any one of the frame periods, which is different from an interlaced scanning manner in the idle mode, and therefore the required sensitivity of the touch panel can be obtained in the operating mode.
  • As shown in FIG. 1, in one embodiment, the touch panel device 100 includes the first sensing lines 110, the second sensing lines 120, third sensing lines 130, fourth sensing lines 140 and the controlling module 150. The first sensing lines 110 and the second sensing lines 120 are alternately arranged and are in parallel with each other along the first direction, and the third sensing lines 130 and the fourth sensing lines 140 are alternately arranged and are in parallel with each other along a second direction which is perpendicular to the first direction. The arrangement of the third sensing lines 130 and the fourth sensing lines 140 is similar to that of the first sensing lines 110 and the second sensing lines 120, e.g., for a plurality of sensing lines which are in parallel with each other, the first one of the sensing lines is the third sensing line 130, the second one of the sensing lines is the fourth sensing line 140, the third one of the sensing lines is the third sensing line 130, and the fourth one of the sensing lines is the fourth sensing line 140, and the rest of the sensing lines are repeated in a similar manner. In the present embodiment, the second direction is perpendicular to the first direction, e.g., the first direction is a X-axial direction and the second direction is a Y-axial direction, or the first direction is an east-west direction and the second direction is a south-north direction. It is noted that, although the arrangement of the first sensing lines 110, the second sensing lines 120, the third sensing lines 130 and the fourth sensing lines 140 is shown in FIG. 1, yet the present invention is not limited thereto, and the arrangement may be adjusted by those skilled in the art according to practical situations.
  • When the controlling module 150 is in the idle mode, the controlling module 150 only scans the third sensing lines 130 during each of the first frame periods t1 to acquire a third group of sensing data values, and only scans the fourth sensing lines 120 during each of the second frame periods t2 to acquire a fourth group of sensing data values. The controlling module 150 determines whether the touch event occurs according to the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values. Hence, the power saving result can be achieved by dividing the sensing lines into groups and controlling the number of the scanned sensing lines in the idle mode. It is noted that the order of scanning the first sensing lines 110, the second sensing lines 120, the third sensing lines 130 and the fourth sensing lines 140 is not limited thereto, and may be modified adaptively by those skilled in the art according to practical situations.
  • In one embodiment, when the touch event occurs, the controlling module 150 is switched to be in the operating mode and combines the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values, which are acquired last in the idle mode, into a group of initial data values in the operating mode. For example, when the touch event occurs, the controlling module 150 has recorded several groups of sensing data values, and the group of initial data values is generated according to the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values, which are acquired immediately prior to the touch event occurs.
  • When the controlling module 150 is switched from the idle mode to the operating mode, an algorithm of the touch panel device 100 in the operating mode needs the information of all the sensing lines for calculation. The predetermined frame rate is not set to be a low value in the idle mode, such that the information of the sensing lines stored originally in the idle mode can be adopted in the operating mode, thereby simplifying the complicated process of the algorithm.
  • In one embodiment, when the controlling module 150 is in the operating mode, the reaction sensitivity of the touch panel should be detected in the operating mode. Different from the interlaced scanning manner in the idle mode, the controlling module 150 scans the first sensing lines 110, the second sensing lines 120, the third sensing lines 130 and the fourth sensing lines 140 during each of the first frame periods t1 and each of the second frame periods t2. For example, the controlling module 150 alternately scans the first sensing lines 110 and the second sensing lines 120 during the first frame periods t1, i.e., the controlling module 150 performs the scanning process along the +X-axial direction, in which one of the first sensing lines 110 is first scanned and then one of the second sensing lines 120 is scanned, and then the next one of the first sensing lines 110 is scanned, and the rest of the sensing lines are repeated in a similar manner. The controlling module 150 alternately scans the third sensing lines 130 and the fourth sensing lines 140 during the second frame periods t2. The scanning process for the third sensing lines 130 and the fourth sensing lines 140 is similar to that for the first sensing lines 110 and the second sensing lines 120. The controlling module 150 performs the scanning process along the −Y-axial direction, in which one of the third sensing lines 130 is first scanned and then one of the fourth sensing lines 140 is scanned, and then the next one of the third sensing lines 130 is scanned, and the rest of the sensing lines are repeated in a similar manner. The order of scanning is not limited by the foregoing descriptions, and may be adaptively modified by those skilled in the art according to practical situations.
  • FIG. 3 is a flow chart showing a scanning method 200 in the touch panel device 100 according to an embodiment of the present invention. The hardware for performing the scanning method 200 has been disclosed in the foregoing embodiment and thus is not further described in detail. Except for steps described as being in a specific order, the order of the steps of the scanning method 200 in the present embodiment is not limited.
  • The scanning method 200 in the touch panel device 100 includes steps 210-220. In step 210, the touch panel device 100 is provided, in which the touch panel device 100 is equipped with the idle mode and the operating mode, and has the first sensing lines 110 and the second sensing lines 120 which are alternately arranged and are in parallel with each other along the first direction. For example, for a plurality of sensing lines which are in parallel with each other, the first one of the sensing lines is the first sensing line 110, the next one of the sensing lines is the second sensing line 120, the further next one of the sensing lines is the first sensing line 110, and the rest of the sensing lines are repeated in a similar manner. For controlling the operation of the touch panel device 100 in the idle mode and the operating mode, in step 220, the first frame periods t1 and the second frame periods t2 are generated alternately according to the predetermined frame rate.
  • Next, in step 230, when the touch panel device 100 is in the idle mode, the touch panel device 100 only scans the first sensing lines 110 during each of the first frame periods t1 to acquire the first group of sensing data values, and only scans the second sensing lines 120 during each of the second frame periods t2 to acquire the second group of sensing data values, and determines whether the touch event occurs according to the first group of sensing data values and the second group of sensing data values. By using the interlaced scanning manner performed for the sensing lines, the scanning process can be performed without changing the predetermined frame rate and the determination of whether the touch event occurs is not affected. Thus, the object of saving power and the reaction requirement for touching operation can be achieved.
  • In one embodiment, the scanning method 200 further includes the steps described below. When the touch panel device 100 is in the operating mode, the touch panel device 100 scans the first sensing lines 110 and the second sensing lines 120 during each of the first frame periods t1 and each of the second frame periods t2. The scanning manners in the idle mode and the operating mode are different from each other. The power saving result may be achieved by performing the interlaced scanning manner in the idle mode, and the operation requirement may be achieved by scanning every one of the sensing lines in the operating mode.
  • In one embodiment, the touch panel device 100 has the third sensing lines 130 and the fourth sensing lines 140 which are alternately arranged and are in parallel with each other along the second direction which is perpendicular to the first direction. The scanning method 200 in the touch panel device 100 may further include the steps described below. When the touch panel device 100 is in the idle mode, the touch panel device 100 only scans the third sensing lines 130 during each of the first frame periods t1 to acquire the third group of sensing data values, and only scans the fourth sensing lines 140 during each of the second frame periods t2 to acquire the fourth group of sensing data values, and determines whether the touch event occurs according to the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values. Similar to step 220, reduction in power consumption can be achieved by the interlaced scanning manner performed for the sensing lines in the idle mode.
  • In another embodiment, when the touch event occurs, the touch panel device 100 is switched to be in the operating mode and combines the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values, which are acquired last in the idle mode, into the group of initial data values in the operating mode. By directly using the previous data values without acquiring additional data values, the efficiency of switching the mode of operation from the idle mode to the operating mode can be increased.
  • In still another embodiment, the scanning method 200 further includes the steps described below. When the touch panel device 100 is in the operating mode, the touch panel device 100 scans the first sensing lines 110, the second sensing lines 120, the third sensing lines 130 and the fourth sensing lines 140 during each of the first frame periods t1 and each of the second frame periods t2. Similar to the foregoing descriptions, the scanning manners in the operating mode and the idle mode in which the interlaced scanning manner is performed are different. By scanning each of the sensing lines, the detection of reaction for touching operation in the operating mode can be more efficient.
  • In conclusion, the scanning manner is changed to the interlaced scanning manner in the idle mode. By performing the interlaced scanning manner, the predetermined frame rate may not be decreased too much, and the object of saving power still can be achieved. Additionally, if it is required that the predetermined frame rate cannot be too low, this scanning manner may save more power without decreasing the predetermined frame rate.
  • In one embodiment, the touch panel device 100 has 16 sensing lines, and the predetermined frame rate is 10 Hz. In a full scanning manner, 16×10=160 sensing lines are scanned in one second. In the interlaced scanning manner, only 8×10=80 sensing lines are scanned in one second. Thus, the predetermined frame rate may be increased to 20 Hz to keep the number of scanned lines being 20×8=160.
  • Additionally, this method has another advantage. The algorithm in operating mode needs the information of all sensing lines for calculation. Since the predetermined frame rate is not decreased to a low value, when the operation mode is switched from the idle mode to the operating mode, the first group of sensing data value, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values, which are acquired at the last in the idle mode, may be combined into a first group of data values in the operating mode. This method uses of previous data values without acquiring additional data values of the sensing lines. Thus, the efficiency of switching form the idle mode to the operating mode can be increased.
  • All the features disclosed in this specification (including any accompanying claims, abstract, and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.
  • Any element in a claim that does not explicitly state “means for” performing a specified function, or “step for” performing a specific function, is not to be interpreted as a “means” or “step” clause as specified in 35 U.S.C. §112, 6th paragraph. In particular, the use of “step of” in the claims herein is not intended to invoke the provisions of 35 U.S.C. §112, 6th paragraph.

Claims (10)

What is claimed is:
1. A touch panel device, comprising:
a plurality of first sensing lines and a plurality of second sensing lines, wherein the first sensing lines and the second sensing lines are alternately arranged and are in parallel with each other along a first direction; and
a controlling module configured to scan the first sensing lines and the second sensing lines during a plurality of first frame periods and a plurality of second frame periods, respectively, wherein the first frame periods and the second frame periods are alternately generated according to a predetermined frame rate; the controlling module is equipped with an idle mode and an operating mode; and, when the controlling module is in the idle mode, the controlling module only scans the first sensing lines during each of the first frame periods to acquire a first group of sensing data values, and the controlling module only scans the second sensing lines during each of the second frame periods to acquire a second group of sensing data values, and the controlling module determines whether a touch event occurs according to the first group of sensing data values and the second group of sensing data values.
2. The touch panel device of claim 1, wherein when the controlling module is in the operating mode, the controlling module scans the first sensing lines and the second sensing lines during each of the first frame periods and each of the second frame periods.
3. The touch panel device of claim 1, further comprising:
a plurality of third sensing lines and a plurality of fourth sensing lines, wherein the third sensing lines and the fourth sensing lines are alternately arranged and are in parallel with each other along a second direction which is perpendicular to the first direction;
wherein when the controlling module is in the idle mode, the controlling module only scans the third sensing lines during each of the first frame periods to acquire a third group of sensing data values, and the controlling module only scans the fourth sensing lines during each of the second frame periods to acquire a fourth group of sensing data values, and the controlling module determines whether the touch event occurs according to the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values.
4. The touch panel device of claim 3, wherein when the touch event occurs, the controlling module is switched to be in the operating mode and combines the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values, which are acquired last in the idle mode, into a group of initial data values in the operating mode.
5. The touch panel device of claim 3, wherein when the controlling module is in the operating mode, the controlling module scans the first sensing lines, the second sensing lines, the third sensing lines and the fourth sensing lines during each of the first frame periods and each of the second frame periods.
6. A scanning method in a touch panel device, the scanning method comprising:
providing a touch panel device, wherein the touch panel device is equipped with an idle mode and an operating mode, and has a plurality of first sensing lines and a plurality of second sensing lines which are alternately arranged and are in parallel with each other along a first direction;
generating a plurality of first frame periods and a plurality of second frame periods which are alternately generated according to a predetermined frame rate; and
when the touch panel device is in the idle mode, the touch panel device only scans the first sensing lines during each of the first frame periods to acquire a first group of sensing data values, and only scans the second sensing lines during each of the second frame periods to acquire a second group of sensing data values, and determines whether a touch event occurs according to the first group of sensing data values and the second group of sensing data values.
7. The scanning method of claim 6, further comprising:
when the touch panel device is in the operating mode, the touch panel device scans the first sensing lines and the second sensing lines during each of the first frame periods and each of the second frame periods.
8. The scanning method of claim 6, wherein the touch panel device has a plurality of third sensing lines and a plurality of fourth sensing lines which are alternately arranged and are in parallel with each other along a second direction which is perpendicular to the first direction, and the scanning method further comprises:
when the touch panel device is in the idle mode, the touch panel device only scans the third sensing lines during each of the first frame periods to acquire a third group of sensing data values, and only scans the fourth sensing lines during each of the second frame periods to acquire a fourth group of sensing data values, and determines whether the touch event occurs according to the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values.
9. The scanning method of claim 8, wherein when the touch event occurs, the touch panel device is switched to be in the operating mode and combines the first group of sensing data values, the second group of sensing data values, the third group of sensing data values and the fourth group of sensing data values, which are acquired last in the idle mode, into a group of initial data values in the operating mode.
10. The scanning method of claim 8, wherein when the touch panel device is in the operating mode, the touch panel device scans the first sensing lines, the second sensing lines, the third sensing lines and the fourth sensing lines during each of the first frame periods and each of the second frame periods.
US13/470,839 2011-12-23 2012-05-14 Touch Panel Device and Scanning Method Therein Abandoned US20130162550A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2011104468549A CN103176638A (en) 2011-12-23 2011-12-23 Touch panel device and scan method thereof
CN201110446854.9 2011-12-23

Publications (1)

Publication Number Publication Date
US20130162550A1 true US20130162550A1 (en) 2013-06-27

Family

ID=48636572

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/470,839 Abandoned US20130162550A1 (en) 2011-12-23 2012-05-14 Touch Panel Device and Scanning Method Therein

Country Status (2)

Country Link
US (1) US20130162550A1 (en)
CN (1) CN103176638A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140267101A1 (en) * 2013-03-18 2014-09-18 Fujitsu Limited Display device and method for controlling display device
US20150253927A1 (en) * 2014-03-07 2015-09-10 Synaptics Display Devices Kk Semiconductor device
US20160027403A1 (en) * 2012-06-26 2016-01-28 Canon Kabushiki Kaisha Display control apparatus, display control method, display control system, and storage medium
US20160078838A1 (en) * 2014-09-17 2016-03-17 Mediatek Inc. Processor for use in dynamic refresh rate switching and related electronic device
US20160224180A1 (en) * 2015-02-03 2016-08-04 Samsung Electronics Co., Ltd. Method for controlling touch screen and electronic device supporting thereof
US9905199B2 (en) 2014-09-17 2018-02-27 Mediatek Inc. Processor for use in dynamic refresh rate switching and related electronic device and method
EP3835928A1 (en) * 2018-09-30 2021-06-16 Huawei Technologies Co., Ltd. Stylus detection method, system, and related device
US11640802B2 (en) 2021-05-20 2023-05-02 E Ink Holdings Inc. Display device and display device driving method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108920026B (en) * 2018-05-03 2021-06-22 业成科技(成都)有限公司 Touch screen scanning method, computer device and storage medium

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090066665A1 (en) * 2007-09-11 2009-03-12 Leadis Technology, Inc. Device and Method for Driving a Touch Pad
US20090189867A1 (en) * 2008-01-30 2009-07-30 Apple, Inc. Auto Scanning for Multiple Frequency Stimulation Multi-Touch Sensor Panels
US20100026660A1 (en) * 2008-08-01 2010-02-04 Sony Corporation Touch panel and method for operating the same, and electronic apparatus and method for operating the same
US20100277463A1 (en) * 2009-04-29 2010-11-04 Shih-Chieh Yen Timing controller with power-saving function
US20130147741A1 (en) * 2011-12-13 2013-06-13 Stmicroelectronics Asia Pacific Pte Ltd. Interlace row scan

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9772667B2 (en) * 2007-06-13 2017-09-26 Apple Inc. Integrated multi-touch surface having varying sensor granularity
CN101866210B (en) * 2009-04-16 2012-03-21 群康科技(深圳)有限公司 Power saving device and method for capacitive touch pad and capacitive touch pad
CN101702106B (en) * 2009-11-04 2011-11-23 深圳市汇顶科技有限公司 Awakening method and system for touch screen terminal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090066665A1 (en) * 2007-09-11 2009-03-12 Leadis Technology, Inc. Device and Method for Driving a Touch Pad
US20090189867A1 (en) * 2008-01-30 2009-07-30 Apple, Inc. Auto Scanning for Multiple Frequency Stimulation Multi-Touch Sensor Panels
US20100026660A1 (en) * 2008-08-01 2010-02-04 Sony Corporation Touch panel and method for operating the same, and electronic apparatus and method for operating the same
US20100277463A1 (en) * 2009-04-29 2010-11-04 Shih-Chieh Yen Timing controller with power-saving function
US20130147741A1 (en) * 2011-12-13 2013-06-13 Stmicroelectronics Asia Pacific Pte Ltd. Interlace row scan

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160027403A1 (en) * 2012-06-26 2016-01-28 Canon Kabushiki Kaisha Display control apparatus, display control method, display control system, and storage medium
US10224001B2 (en) * 2012-06-26 2019-03-05 Canon Kabushiki Kaisha Display control apparatus, display control method, display control system, and storage medium
US20140267101A1 (en) * 2013-03-18 2014-09-18 Fujitsu Limited Display device and method for controlling display device
US20150253927A1 (en) * 2014-03-07 2015-09-10 Synaptics Display Devices Kk Semiconductor device
US10001877B2 (en) * 2014-03-07 2018-06-19 Synaptics Japan Gk Semiconductor device
US9905199B2 (en) 2014-09-17 2018-02-27 Mediatek Inc. Processor for use in dynamic refresh rate switching and related electronic device and method
US20160078838A1 (en) * 2014-09-17 2016-03-17 Mediatek Inc. Processor for use in dynamic refresh rate switching and related electronic device
US10032430B2 (en) * 2014-09-17 2018-07-24 Mediatek Inc. Processor for use in dynamic refresh rate switching and related electronic device
KR20160095540A (en) * 2015-02-03 2016-08-11 삼성전자주식회사 Method for controlling touch screen and electronic device supporting thereof
EP3254177A4 (en) * 2015-02-03 2018-02-21 Samsung Electronics Co., Ltd. Method for controlling touch screen and electronic device supporting thereof
CN107003781A (en) * 2015-02-03 2017-08-01 三星电子株式会社 Control the method for touch-screen and support the electronic equipment of this method
US20160224180A1 (en) * 2015-02-03 2016-08-04 Samsung Electronics Co., Ltd. Method for controlling touch screen and electronic device supporting thereof
US10664088B2 (en) * 2015-02-03 2020-05-26 Samsung Electronics Co., Ltd. Method for controlling touch screen and electronic device supporting thereof
CN107003781B (en) * 2015-02-03 2021-03-30 三星电子株式会社 Method for controlling touch screen and electronic device supporting same
KR102303217B1 (en) 2015-02-03 2021-09-17 삼성전자주식회사 Method for controlling touch screen and electronic device supporting thereof
EP3835928A1 (en) * 2018-09-30 2021-06-16 Huawei Technologies Co., Ltd. Stylus detection method, system, and related device
EP3835928A4 (en) * 2018-09-30 2021-09-01 Huawei Technologies Co., Ltd. Stylus detection method, system, and related device
US20210397342A1 (en) * 2018-09-30 2021-12-23 Huawei Technologies Co., Ltd. Stylus Detection Method, System, and Related Apparatus
US11899879B2 (en) * 2018-09-30 2024-02-13 Huawei Technologies Co., Ltd. Stylus detection method, system, and related apparatus for switching frequencies for detecting input signals
US11640802B2 (en) 2021-05-20 2023-05-02 E Ink Holdings Inc. Display device and display device driving method

Also Published As

Publication number Publication date
CN103176638A (en) 2013-06-26

Similar Documents

Publication Publication Date Title
US20130162550A1 (en) Touch Panel Device and Scanning Method Therein
US20120284674A1 (en) Touch control method and apparatus
CN103488419B (en) The operating method and communication terminal of communication terminal
US20160195990A1 (en) Electronic device and touch scan method thereof
US20120131490A1 (en) Touch-controlled device and method for displaying a virtual keyboard on the touch-controlled device thereof
EP2320312A1 (en) Portable electronic device and method of controlling same
US8830192B2 (en) Computing device for performing functions of multi-touch finger gesture and method of the same
US20150062020A1 (en) System and method for improved processing of touch sensor data
US20200159900A1 (en) Smart touchscreen display
CN105511789B (en) A kind of icon processing method and terminal
US20110074718A1 (en) Frame item instruction generating method for touch panel
CN104615332A (en) Mobile terminal and application icon arrangement method
EP2491704B1 (en) Text input method in portable device and portable device supporting the same
CN108064371A (en) A kind of control method and device of flexible display screen
JP2011227854A (en) Information display device
CN102968273A (en) Electronic device and page-zooming method thereof
US20110109561A1 (en) Portable electronic device and method of controlling same
JP2012018660A (en) Operating module of hybrid touch panel and method for operating the same
CN106462310B (en) The method of the touch point of touch chip and touch chip detection touch screen
US20190095049A1 (en) Window expansion method and associated electronic device
CN103513820A (en) Apparatus and method for controlling mode switch
CN102830918A (en) Mobile terminal and method for adjusting size of display fonts of mobile terminal
US10831289B2 (en) Method and device for handling event invocation using a stylus pen
KR101879856B1 (en) Apparatus and method for setting idle screen
US20120274573A1 (en) Korean input method and apparatus using touch screen, and portable terminal including key input apparatus

Legal Events

Date Code Title Description
AS Assignment

Owner name: HANNSTAR DISPLAY CORPORATION, TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHEN, CHUN-HSI;CHUNG, JUN-SHIH;HUANG, CHIEN-HSIANG;SIGNING DATES FROM 20120502 TO 20120503;REEL/FRAME:028203/0687

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION